topic Re: Shell scripting in Operating System - HP-UX

Shell scripting

GNOM — Tue, 15 Feb 2005 06:06:31 GMT

Hi all,

I'm programming a shell Script To start and stop an application.
my problem is that to execute some applications I have to change the user and load his Environment parameters.
using su - -c didn't succeed because there are many parmeters to load for this user.
where doing su - in the script
unix changes the user and stop running the scrip.
So I need your help because I'm learning shell scripting.
I'm working with hp-ux 11.11

Thanks for your help !!

Re: Shell scripting

Ranjith_5 — Tue, 15 Feb 2005 06:21:16 GMT

Hi Ami,

try the following in your script.

#nohup

This allows the command to be keep ruuning even after after changing the session.

If you can post your script then people can modify that in a better way. post it if you dont mind.

Regards,
Syam

Re: Shell scripting

B Woolley — Tue, 15 Feb 2005 10:03:01 GMT

Assuming that you can su to the specified user without a password prompt, then why not invoke another script as the command - one that ensures environment is set up correctly, and that then invokes the 'proper' command you want to run.

Re: Shell scripting

Florian Heigl (new acc) — Tue, 15 Feb 2005 13:05:33 GMT

please try using the following instead of su - ,
su user -c 'command'
I think this will solve the issue as the parameters will possibly get wiped by a full login, unless there's really really many.

Re: Shell scripting

Sheriff Andy — Tue, 15 Feb 2005 16:01:57 GMT

Hi,
Have you tried loading the environment variables into the script of the user who you are trying to do a su - on?
I would also try as suggested above, trying to do a manual su - -c .

Re: Shell scripting

Rodney Hills — Tue, 15 Feb 2005 18:11:30 GMT

You could try the following-

#!/usr/bin/sh
echo Running this as "root"
su otheruser <echo I am now `id`
. ~otheruser/.profile
echo I now have my env variables like otheruser
...
EOF

This way even though a new shell is started for the new "su" user, it will continue to read in the script from the file. Using "." will source in the .profile.

You can now run applications (for the most part) like you were "otheruser"

HTH

-- Rod Hills